Update. After a lot of work yesterday, I’ve made good progress. I have no peaks over 4 db, and 4 nulls that are -5-6db and one big narrow one that is -8 db.
Scan results are on my system page:
https://systems.audiogon.com/systems/9064/edit
Basics of what I did:
REW notes: Besides using REW to play sweeps and analyze the curves I tried something new (for me).
Scan results are on my system page:
https://systems.audiogon.com/systems/9064/edit
Basics of what I did:
- Started with a baseline scan. No subs.
- Assuming positions I had worked out before were adequate....
- Added 1 sub (REL). Adjusted in minute increments to (a) gain, (b) crossover, (c) phase -180 or 0.
- Added subs 2 and 3 (Rythmik). Adjusted in minute increments to (a) gain, (b) crossover, (c) phase, (d) various filter adjustments on sub
- Once those measurements were all optimized I adjusted:
- Front wall treatments, adding, subtracting, and moving.
- Side and other area treatments, same.
- Ceiling treatments -- doubled and adjusted position of existing treatments.
REW notes: Besides using REW to play sweeps and analyze the curves I tried something new (for me).
- I looked at the graph to identify the frequency where a peak or deep null was.
- Then, I’d play a constant tone and move a single treatment, facing the laptop screen display of the SPL meter, keeping an eye on the tone and an SPL graph next to it.
- When the the SPL graph showed a real decrease in a peak (or rise in a null), I’d leave the treatment there and then go back and do a sweep.
- Then, I’d repeat it and either shift treatment position or add more treatment there or nearby.